Manhole sealing device convenient to pass through

Abstract

The invention discloses a manhole sealing device convenient to pass through. The manhole sealing device comprises a manhole sleeve and a manhole cover plate, wherein the manhole sleeve and the manholecover plate are hinged to each other through a hinge shaft, a plurality of first through holes are uniformly formed in the periphery of the top of the manhole cover plate, and internal threads are arranged in the first through holes; a bending part is arranged at the bottom end, close to the manhole cover plate, of the manhole sleeve, the bending part extends outwards in the diameter direction ofthe manhole sleeve, and the bending part is provided with a plurality of second through holes matched with the first through holes; and a fixed rod is vertically arranged at the top of the manhole sleeve, and a fixing hole is horizontally formed in the top of the fixed rod. According to the manhole sealing device, the fixed rod is arranged on the manhole sleeve, a sliding block matched with the fixed rod is arranged on the manhole cover plate, the sliding block can slide back and forth to be meshed with or disengaged from the fixed rod, the temporary locking and unlocking of the manhole sealing device can be conveniently completed, and the problem that the inconvenient problem that connection is achieved only by a fastening bolt mode in the past is solved.

Description

technical field [0001] The invention belongs to the technical field of pipeline fittings, and in particular relates to a manhole sealing device which is convenient for passage. Background technique [0002] As we all know, manhole refers to the opening structure used for personnel to enter and exit equipment for installation, maintenance and safety inspection. It is mainly composed of short tube joints, short pipes, flanges and manhole covers with handles. Stainless steel, manholes are divided into normal pressure and pressure manholes according to the pressure situation, and manholes are divided into round, oval and rectangular manholes according to the shape. Manholes are installed horizontally and vertically. The fixing methods of manhole covers include swivel cover and hanging cover. When the manhole has just been installed, because other equipment needs to be installed, it is necessary to enter and exit the manhole frequently. Most of the existing manholes are The nuts...

AI Technical Summary

Problems solved by technology

[0002] As we all know, manhole refers to the opening structure used for personnel to enter and exit equipment for installation, maintenance and safety inspection. It is mainly composed of short tube joints, short pipes, flanges and manhole covers with handles. Stainless steel, manholes are divided into normal pressure and pressure manholes according to the pressure situation, and manholes are divided into round, oval and rectangular manholes according to the shape. Rectangular manholes are only suitable for atmospheric pressure equipment. Manholes are installed horizontally and vertically. The fixing methods of manhole covers include swivel cover and hanging cover. When the manhole has just been installed, because other equipment needs to be installed, it needs to enter and exit the manhole frequently. Most of the existing manholes are The nuts are closed under the action of multiple groups of bolts and nuts, and the steps of frequently opening or closing manholes will be very cumbersome

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